Bicycle seat-post.



Patented June 5, I900.

A. W. NUTZ.

BICYCLE SEATPOST.

(Application filed Sept 12, 1899.)

(No Model.)

A.WMZZZ IIDSQQTOP B y c lflomje ys Wi hje'sscs UNITED STATES PATENTOFFICE.

ALBERT \VOLFORD NUTZ, OF PLAINVILLE, KANSAS.

BICYCLE SEAT-POST.

SPECIFICATION forming part of Letters Patent No. 651,264, dated June 5,1900.

Application filed September 12, 1899. Serial No. 730,262. (No model.)

of Kansas, have invented a new and useful Bicycle Seat-Post, of whichthe following is a specification.

This invention relates to bicycle seat-posts, and more particularly tothe seat-supporting T therefor; and it has for its object to provide aconstruction in which the bar of the 'T will be loosely mounted in thehead to peringtheT with its head in position- Fig. 2 is a View similarto Fig. 1 with aportion broken away to show the location and arrangementof the seat-supporting bar. Fig. 3 is a see tion taken through the headand seat-supporting bar and also through a portion of the stem, thesecuring-rivet being shown in elevation.

Referring now to the drawings, 5 represents the stem of theseat-supporting T, having a tubular head 6 extending at opposite sidesof the stem and at an acute angle to the axis of the latter.Transversely of the stem and head is formed a perforation opening intothe inclosure of the head, the lower wall of said perforation beingextended into the stem of the T, as shown in Fig. 2, a line drawnlongitudinally of the lowermost point of the inner wall of the headpassing through the center of this perforation.

- A seat-supporting bar 8 is adapted for insertion in the head 6 and tofit snugly therein and is provided with an annular flange 9, adapted tolie against the rear end of the head and to act as a stop in theinsertion of a bar.

A transverse groove 10 is formed in one side of the bar 8, at rightangles to the axis of the latter, and is arc-shaped in cross-section,the outline of this slot in a plane at right angles to the axis of thebar 8 and passing centrally of the slot being an are having a radiusgreater than that of the bar, as shown in Fig. 3 of the drawings. Passedthrough the perforation in the head and stem and lying in the groove 10is a rivet 11, the ends of which extend outwardly beyond the surfaces ofthe head and stem and are upset or other wise treated to preventdisplacement. With this construction, as will be readily understood, thebar 8 may have a rocking or oscillatory movement in the head, whichmovement will be limited, and at the same time longitudinal displacementof the bar will be prevented. Oorrespondingly a seat upon the bar 8 willyield to the action of the rider and will have an oscillatory movement,contributing great ease in the operation of the bicycle to which thisconstruction is applied.

It will of course be understood that in practice the specific structureshown may be al-' tered and that any suitable materials and proportionsmay be employed Without departing from the spirit of the invention.

It will be seen from reference to Fig. 2 of the drawings that theannular flange 9 upon the bar 8 limits the movement of the bar when itis inserted to that point where its transverse slot will registerwiththe perforation to permit the ready insertion of the rivet.

Having thus described the invention, what I claim is-- 1. In aseat-support, the combination wit-11 a stem having a tubular headprovided with a perforation, of a seat-supporting bar within the headand having a transverse slot passing part way around the bar, a rivetlying in the perforation and slot, transversely of the bar, to permitlimited rocking movement of the bar, and a flange upon the bar adaptedto engage the head to aline the perforation and slot.

2. In a seat-support, the combination with a stem and a tubular head,having a perforation therein, of a seat-bar in the head, a slot in thebar, and a rivet lying in the perforation and slot transversely of thebar to permit a limited rocking movement of the bar and preventlongitudinal displacement thereof.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

ALBERT W'OLFORD NUTZ. Witnesses: THos. J. GLENNON, I

JAMES DOUGHERTY.

